IRR Calculator

Enter a series containing at least one negative and one positive cash flow to numerically solve for IRR.

Periodic cash flows — period 0 first

Discount rate (%)

For IRR, the discount rate is used only to show NPV at your comparison rate.

—IRR

—NPV at entered rate

—Cash-flow periods

—Undiscounted sum

Planning estimate only. Results depend on the values and assumptions you enter and are not financial, tax, legal, or lending advice.

How to use this IRR Calculator

Estimate internal rate of return for periodic cash flows. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.